Solutions: strengthen leek field management, control temperature and humidity, timely watering, pay attention to cooling and such work in summer, greenhouse planting can be cooled and protected from the sun by building a sunshade net. Pay attention to guard against cold snap in early spring and late autumn and reduce the occurrence of frost injury. Secondly, through the vents on both sides of the greenhouse to adjust the temperature in the greenhouse, it is best to control the temperature between 20 and 30 degrees. The greenhouse can be covered with grass to keep warm in winter.
In addition, the multi-layer umbrella also has a very good UV shielding effect, tested with a detector, the UV value is 3605 without a sunshade, and the value drops to 009 after using a sunshade, and the insulation effect is also very good. Without shelter, the dashboard temperature is nearly 60 degrees, while after using a sunshade, the temperature drops to more than 20 degrees.
Exposed to sunlight during the day, the largest heating area is the film coverage, and the largest heat dissipation at night is also the film coverage. Because the film coverage area is larger, so the thermal insulation effect of the film coverage is very important. Therefore, it is necessary to do a good job in the protection of film coverage. The shading system at the top of the greenhouse is divided into external shading, internal shading and internal heat preservation system, which are controlled by computer. The weather station system on the outside of the shed might as well monitor the wind direction and temperature at any time. The configuration of the greenhouse sunshade system is beneficial to the accumulation of reducing heat in the greenhouse, and the comprehensive temperature of crops under the sunshade is actually lower than that directly reflected by the open sun.
With a more balanced center of gravity, lightweight carbon fiber materials, and a new mechanism to wear devices without re-adjustment, this series of optimizations enhance the comfort of the HoloLens. Microsoft has improved thermal management with new soaking plate technology and solved a wide range of physiological changes in the size and shape of the head through a long period of exploration and practice: simply put, the HoloLens2 is basically a general-purpose device that can support glasses users at the same time. The new call fitting system allows users to wear it comfortably for hours. In addition, when you end a mixed reality conversation, you only need to flip the sunshade. All in all, Microsoft believes that “the features mentioned above have more than tripled the measurement comfort and ergonomic design of the device.”
Zhang Wei, deputy general manager of the Urban Deputy Central Station Integrated Hub Construction Management Co., Ltd., said that the “Jingfan” roof has built a perforated sunshade, which balances the cold and heat load and can rationally control the indoor light and heat environment. It is estimated that by adopting the “Beijing sail” scheme, the heat load can be reduced by 5.2 million kilowatt-hours per year, which is equivalent to the summer cooling capacity of 3200 household air conditioners, and the power consumption of lighting can be reduced by about 486000 kilowatt-hours per year.